User Profile Builder <= 4.0.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'redirect_url' Shortcode Attribute

ID

WPSEC-2026-1354

Plugin

User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor (profile-builder)

Affected

all versions before 4.0.5

Remediation

Update to 4.0.5 or later.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness

CWE-79

Usage

Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-21

Attack surface

User Profile Builder on WPSec AttackSurface

Fix released

2026-10-19

Published

2026-10-21

Description

The User Profile Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'redirect_url' attribute of the plugin's Edit Profile and Registration shortcodes in all versions up to, and including, 4.0.4. This is due to the wppb_build_redirect() function placing the redirect URL into a meta refresh tag without escaping. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts in pages. The scripts run when a user submits the form on the injected page.

References

• https://wpsec.com/vuln/WPSEC-2026-1354/
• https://plugins.svn.wordpress.org/profile-builder/tags/4.0.5/
• https://wordpress.org/plugins/profile-builder/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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